63.19% is the change from 307 to 501
Calculation steps:
[( 501 - 307 ) ÷ 307] x 100 = 63.19%
Formula
Percentage change = [(501 - 307) / 307] x 100
Subtract the new number by the original number
501 - 307 = 194
194 ÷ 307 = 0.6319218241042345
0.6319218241042345 x 100 = 63.19%